Management of potted osmanthus fragrans
1, watering: Osmanthus fragrans pot soil should master the principle of no watering and be thoroughly watered, but it should be sprayed with clear water once a day to evenly moisten all branches and leaves, so as to keep the leaves moist and clean the dust adsorbed on them. After Tomb-Sweeping Day, Osmanthus fragrans was moved to the open air and watered once. Water must be done in the morning and evening in summer, and around noon in winter, so that the water temperature is close to the soil temperature, so as to avoid sudden quenching and heating, and be careful not to accumulate water. Keep the basin moist in winter.
2. Fertilization: Osmanthus fragrans mainly looks at flowers and needs to supply sufficient fertilizer. Nitrogen fertilizer can be applied 1 ~ 2 times when topping to promote the growth of branches and leaves; Before flower bud differentiation and flowering, phosphate fertilizer is mainly applied. After Osmanthus fragrans moved to the open air in spring, rotten thin bean cakes, sesame paste and fishy water were watered once every half month, and once a week from the end of May to before flowering. The concentration of fertilizer and water gradually increased, and 0.5% potassium dihydrogen phosphate solution was topdressing every half month from July to August. Apply light fertilizer solution after flowering to avoid autumn branches. Apply more organic fertilizer and phosphorus and potassium fertilizer in winter. Generally, 25-30g of cooked deodorizing cake fertilizer and 65,438+00-65g of potassium dihydrogen phosphate are applied to the roots every 65,438+05-20 days, and then 2-3kg is mixed with clean water, and then sprayed every 65,438+00-65,438 days. 600 times of high-efficiency biological phosphorus and potassium fertilizer mixture, evenly spraying all branches and leaves, and starting drip is appropriate. Before fertilization, the pot soil should be slightly dry, and the soil should be loosened first to facilitate the absorption of fertilizer. Water it once the next day after fertilization. If compost or manure is used, it must be completely decomposed before it can be used (the sign is that the manure juice is black). The concentration of superphosphate in chemical fertilizer shall not exceed 2%, and the concentration of urea shall be 0.5- 1.0%.
3. Potting: Potted osmanthus flowers are watered every 2-3 years to change the soil. Cut off some old roots and withered roots, and remove some old soil with bamboo sticks. Spread a layer of river sand or vermiculite at the bottom of the basin to facilitate ventilation and drainage, put decomposed cake fertilizer at the bottom of the basin as the base fertilizer, and the fill must be compacted to promote the flourishing of osmanthus fragrans. The proportion of soil for hanging flowers in potted plants is not strict, and it can usually be composed of garden soil, manure pile and river sand, each accounting for 1/3. If the acidity is too high, you can add some lime powder or plant ash; If the alkalinity is too heavy, some aluminum sulfate or ferrous sulfate can be added. In spring, after potted osmanthus fragrans, it should be watered enough to make it permeable, and then moved to the shade for about 10 days to make it "on the pot". Fertilization is not allowed during pot service. Water and fertilizer can only be applied after the growth has resumed and new leaves have grown. The flowerpot is made of purple or ochre, which can be in sharp contrast with the colors of flowers and leaves to increase its ornamental effect.
4. Pruning and shaping: It is better to make sweet-scented osmanthus into curved dry, oblique dry or elegant style. The trees are tilted, the branches and leaves are dense, simple and natural, and the most pleasing to the eye. When the flowers bloom, the fragrance is refreshing. Osmanthus fragrans is generally shaped by climbing and pruning, and the trunk can be climbed into a curved or inclined dry shape. The shaping and pruning of osmanthus fragrans should be carried out after autumn. For plants with high growth but hollow lower branches and poor tree shape, the whole top branches can be cut off at 2/3 or 3/4. For "top-heavy" plants, cut off the branches above, leaving only a small branch, and for plants with too dense branches, thinning should be carried out. After flowering, a pruning should also be carried out to cut off long branches, dead branches, disease and insect branches and sparse branches.
5. Overwintering: the room temperature is kept at 0-5℃ and the relative humidity is kept at 50-80%. Indoor light is better in winter, especially in early spring before the buds begin to sprout, so more sunshine is needed. The following spring, after Grain Rain in North China (before and after the shock), potted osmanthus was arranged to leave the room. After leaving the room, put it in the outdoor leeward and sunny place, and then put it in rows to gradually adapt to the external environment.